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AveGali [126]
3 years ago
14

Is -7,964,837 × -7 positive or negative?

Mathematics
2 answers:
Inessa05 [86]3 years ago
6 0
When using both negative symbols, and then multiplying them, this would mean that the numbers would be going up. 

A negative (x's) a negative equals a positive.

Your answer: positive.
kompoz [17]3 years ago
6 0
Hi, i'd be glad to help with this equation. 

Negative ^ Negative = positive  

Though the answer is positive  

My statement  = -7.964,837 ^ (-7) = Positive (55,753,859) 


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charle [14.2K]

Answer:

-1/3

Step-by-step explanation:

y=mx+b where m=slope and b=y-intercept

8 0
3 years ago
Cl2 + 2KBr -> Br2 + 2KCl what is the reaction?
Serjik [45]

Answer:

Step-by-step explanation:

C

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Given:

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300

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Molecular mass of

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/

m

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No.of moles of

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a

s

s

/

m

o

l

a

r

m

a

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s

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300

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4.23

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Mass of

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300

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Molar mass of

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B

r

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118.9

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/

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l

No.of moles of

K

B

r

=

300

/

118.9

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2.52

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Now,

Consider the equation:

C

l

2

+

2

K

B

r

→

2

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C

l

+

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1

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l

2

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4.23

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2.52

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3 0
3 years ago
On a test, 74% of the questions are answered correctly. If 111 questions are correct, how many questions are on the test?
Mashcka [7]

Answer:

150

Step-by-step explanation:

You have to divide the correct answers (111) by the total amount of questions (x) in order to find the 74% (0.74)

5 0
3 years ago
Read 2 more answers
A set of exam scores is normally distributed and has a mean of 80.2 and a standard deviation of 11. What is the probability that
ZanzabumX [31]

Answer:

93.32% probability that a randomly selected score will be greater than 63.7.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 80.2, \sigma = 11

What is the probability that a randomly selected score will be greater than 63.7.

This is 1 subtracted by the pvalue of Z when X = 63.7. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{63.7 - 80.2}{11}

Z = -1.5

Z = -1.5 has a pvalue of 0.0668

1 - 0.0668 = 0.9332

93.32% probability that a randomly selected score will be greater than 63.7.

5 0
3 years ago
samantha threw an apple out of a window from the tenth floor of her appartment building. the equation y = -16t^2+120 can be used
ella [17]
Answer:
time taken = 2.74 seconds

Explanation:
We are given that:
y = -16t² + 120 models the situation where:
y is the floor number
t is the time taken for the apple to hit the ground

We are also given that the floor number (y) is 10. Therefore, all we have to do is substitute with y in the above equation and solve for the time t as follows:
y = -16t² + 120
10 = -16t² + 120
120 - 10 = 16t² 
110 = 16t²
t² = 110/16
t² = 6.875
either t = 2.74 seconds ..........> accepted
or t = -2.74 seconds .........> rejected as time cannot be in negative

Hope this helps :)
5 0
3 years ago
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